Thermal pack



FIG. 1 is a right front perspective view of the thermal pack.

FIG. 2 is a rear side view of the thermal pack.

FIG. 3 is a side edge view of the thermal pack.

FIG. 4 is a bottom edge view of the thermal pack; and,

FIG. 5 is a top edge view of the thermal pack. 

The ornamental design for a thermal pack, as shown and described. 